Territory



(No Model.) 3 Sheets-Sheet 1.

A. MQKELLAR. ORE SEPARATOR AND PULVERIZER.

No. 250,156. v Patented Nov. 29,1881.

N'ITNESSES ATTORNEYS.

('N Model 3 Sheets-Sheet 2..

A. MOKELLAR. 1

ORB SEPARATOR AND PULVERIZER.

No. 250,156. I Patented Nov. 29,1881.

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(No Model.) 3 Sheets-Sheet 3. S A. McKELLAR.

ORE SEPARATOR AND PULVERIZER.

No. 250,156. Patented Nov. 29,1881.

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UNITED STATES PATENT OFFICE.

ANGUS lVIfiKELLAR, OF FORT DOUGLAS, UTAH TERRITORY.

ORE SEPARATOR AND PULVERIZER.

SPECIFICATION formingpart of Letters Patent No. 250,156, dated November 29,1881.

Application filed J nne 21, 1881 inafter described.

Figure 1 is a side elevation of the device. Fig. 2 is a plan of the same. Fig. 3 is a sectional side elevation of the same on line :12,

Fig. 2. Fig. at is a sectional elevation on line 3 3 Fig. 3, with parts broken away to exhibit otherparts. Fig. 5 is an elevation of a'portion of the side of the device opposite that shown in Fig. 1.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the frame of V the device.

B is the receiving-hopper, into which the gravel, sand, or ore to be operated upon is thrown. In the bottom of said hopper B is a fluted roller, B, whose shaft is journaled in boxes at a on the top of the frame A, and is provided with a pulley, B that is designed to feed said gravel, sand, 850., to the screens 0 below. In a side of the hopper B is a hinged door, B held closed by springs a a, for the purpose of permitting large stones or bowlders to pass out of said hopper B onto the sieves of screens 0 without injuring the said hopper B. The material fed into the hopper B by elevator or any other means is fed upon the screens 0 below by the action of the roller B, that is revolved by means of a belt, B extending from its pulley B to pulley C. These screens 0 are, in this instance, three in number, set one above the other at a slight forward inclination and parallel with each other, and each one is separately pivoted by its lugs b b on longitudinally-extended rods 0, that have bearings at one end in suitable boxes or hangers, b b, at the rear of frame A, while their other ends have bearings in suitable boxes or hangers, b W, as shown.

Each screen 0 is provided with a lateral lug, c, on each side, which are all pivoted to vertical bars a, so that all said screens 0 shall (No model.)

move together. To the side of the upper and coarser screen 0 is secured a projecting arm,

0 on the end of which is pivoted a link, 0', to

which is connected an eccentric-rod, O whose opposite end is secured on the eccentric 0 that is keyed on the transverse shaft 0 which is journaled in boxes 0 on the lower timbers of the frame A, and has pulleys O O on its opposite end. As the shaft 0 is revolved the screens 0 rock from side to side on the rods O, the material falling on the upper screen 0, and, failing to pass through its meshes, is discharged from the front of said screen 0 into an opening, d, in the upright chute D, and thence to the ground. What material falls through the upper and coarser screen 0 upon the finer one beneath it and fails to pass through the latter also is discharged to waste through the chute D, as also what fails to pass through the lower and finest screen 0, while what passes through this lower screen 0 falls into the laterally-sloping pan D and escapes therefrom through an orifice, cl, into the elevator E, whereby it is elevated and discharged into a conductor, E, to fall into a hopper, F, that is supported at the other end of the frame A over the pulverizing-rolls G G. The elevator-shaft E is jonrnaled in boxes 01 d on the lower timbers of the frame A, parallel with the shaft 0 and has on one end a driving-pulley, E, that is driven by a cross-belt, M from the pulley M on the roll-shaft K, and on the other end a drum, E about which the endless chain of buckets E is drawn.

In the top of the elevator E is a transverse shaft, E on which is keyed a drum, E, about which the chain of buckets E is drawn.

Extending longitudinally in the bottom of 0 the hopper F is a fluted roller, F, secured on a-shaft, Ffiwhich isjournaled in suitable boxes on the upper timbers of the frame A, and has on one end a driving-pulley, F Said roller F is designed for feeding the material deliv- 5 ered from the elevator E upon the upper pulverizing-rolls, G G. These rolls G G are set parallel and in near proximity to each other,

with their shafts journaled in boxes 9 g, re-

spectively, that are held in suitable metallic 10o G, as may be desired, for finer or coarser crushing of the sand.

On one end of the shaft of the roll G is a cogwheel, G, that gears into a corresponding cogwheel, G, on the shalt of the roll G, and on the opposite end of the shaft of the roll G is a pulley, G', from which a belt, G, extends around the pulley 1 of the fluted roller F to drive the latter. A pulley, G, is secured on the cog-wheel end of the shaft of the roll G, for the purpose, if desired, of transmitting power to an elevator that may be used for elevating and delivering the material to be operated upon into the receiving-hopper B.

Pivoted on the inner faces of the housings G parallel with the rolls G G, and held in contact therewith with greater or less force by the adjustable weights H on the arms H are the scrapers H, designed for the purpose of scraping the pulverized sand or other material 4 from the said rolls G G. To receive all the material falling through the rolls G G an open hopper, I, is secured beneath them in the frame A, and beneath the hopper I are the parallel rolls K K, that are journaled in suitable boxes, h h, fixed in housings l in the lower portion of the frame A. The boxes h of the shaft of the roll K are adjustable by means of set-screws h so that said roll K may be approached or withdrawn from the roll K, as may be desired, for finer or coarser pulverization of the sand that falls from the hopper I.

Scrapers L, pivoted at each end in the housings 1, parallel with the rolls K K, are held in contact with said rolls with greater or less force, as may be desired, by weights L, hung on the scraper hooks or arms L said scrapers L being designed to remove adhering sand, metal, 860., from the face of the said rolls K K. It is designed to set these lower rolls, K K quite close together, in order to pulverize the material passing through them to the fineness of ordinary wheat-flour, so that the particles of sand or ore shall be reduced as fine as the finer particles of gold, and the fine particles of gold be separated from their matrices, and by this fine pulverization of the gold-bearing ore or sand the particles of gold are brightened and the scale removed from them, so that they will readily be seized by the mercury in the process of amalgamatin g, and are flattened, so as to present a larger surface to the attack of the mercury.

On one end of the shaft of the roll K is a cogwheel, M, that meshes with a corresponding cog-wheel, M, on the shaft of the roll K, and on the opposite end of this latter shaft is a driving-pulley, M from which a belt, M runs to the pulley O on the eccentric-shaft O and a pulley, M connected by cross-belt M with the elevator driving-pulley E All this mechanism is driven by power applied to the pulley N of the shaft N, that passes longitudinally through the hopper I, and has keyed on its pulley end a cog-wheel, N, which meshes with the cog-wheel M on the shaft of the roll K, and has keyed on its other end a cog-wheel, N, that meshes with the cog-wheel G on the shaft of the roll G.

The parts shown on the right of Figs. 1, 2, and 3 of the drawings relate to an amalgamator which forms no part of the present invention, but which I preferably use in connection with my separating and pulverizing devices. It will form the subject-matter of a subsequent application.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- In a combined gold-dust separator and pulverizer, the combination, in frame A, of the connected rocking screens 0, elevator E, and rolls G G K K, and their operating-connections, substantially as herein shown and described.

ANGUS MOKELLAR.

Witnesses:

J os. F. SIMMONS, ARTHUR HAYNER. 

